Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Find the force so that all blocks are at rest with respect to each other
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Cat chasing a dog, not in a straight path
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Maximum Acceleration: I Got the Correct Answer
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Diffraction Grating: Possible variables for Experiment
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How to know whether motion is simple harmonic motion or not?
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At what angle do we have to kick a ball up the hill for n-rebounds?
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Proving Acute Angles from Two Equations
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Time it takes for the rocket to fall down
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Motion in Electric and Magnetic Fields -- (Uni Level Dynamics)
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What are the possible quantum states of an electron relaxing from n=4 to n=3?
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How does the rotation of Earth affect the height of a tidal bulge?
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Inclined Plane Forces - with a twist
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Find the accelerations of all three blocks and the tension in the rope
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Understanding Total Voltage in Parallel Circuits
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Kirchhoff's Rules for analyzing this circuit with batteries and resistors
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Analyse the cutting force of this bolt cutter
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Average current around a magnetic loop that changes its shape
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Physics: How much is this person's femur compressed?
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Torque with an oddly shaped lever
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Tension in a rope wrapped around a shaft, pulling in a mass
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Problem involving friction, with a mass being pulled up a slope
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A circuit with switches, capacitators and resistors
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Magnetic field Calculation of a Square Wire Loop (with a changed segment)
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Gamma factor when doing four momentum problems
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How can you calculate change in length without force and area units?
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Electric field between two capacitor plates (proof)
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Circuit diagram questions -- 3 Light Bulbs in a 120V circuit
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Conventional current, magnetic fields and magnetic poles of different diagrams
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Two movable pulleys lifting a mass
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Is the Chain Rule Applied to Spherical Polar Coordinates Different?
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Pressure due to two liquids in a U-tube
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Infinite Objects: Seeking the Physics Behind the Math
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How do I find the angle and direction of a magnetic field?
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Spacetime Physics (2nd ed.) problem 2-2: Bathroom scale and a Trampoline
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Electric field involving 4 point charges in a rectangle
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What were my mistakes in solving this ladder problem in physics?
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How Can I Solve for the Forces on Pruning Shears with Three Subsystems?
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How Do You Calculate Time Ratios in Motion with Drag Force?
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Momentum transfer of brittle objects
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Conical Pendulum: Solving the Height Issue
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Optics (dealing with 2 sources of wavelength)
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Damped Oscillator and Oscillatory Driving Force
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What is the Relationship Between Strain and Change in Length in Hooke's Law?
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Electron excited from the ground state to a quantum state
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Light rays passing through a glass prism
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What is the work done to move this Charge?
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Finding Angles in a Double slit experiment
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Finding the distance in an optics system
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Velocity of the center of mass of the system
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What Is the Magnetic Field at Point P on the Y-Axis?
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Acceleration of a moving wedge with a falling block
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Kinetic energy of a ball rolling down a ramp
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Magnetic field due to two loops
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Use of hard drive magnets to build an MHD propulsion ship
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Torque on a Beam Due to Gravity
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Confused About Critical Angle and Echoes?
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Electric Fields: calculate the resultant force
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How Do Four-Vectors with Orthogonal Dot Products Determine Each Other's Nature?
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Griffiths Introduction to Electrodynamics (Stokes Theorem Corollary)
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Integration in polar coordinates
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Pulleys with Torque: Free Body Diagram Analysis
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Understanding Tension in Angles: Expert Insights and Tips
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System with Pulleys and a Rope That Might Break
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Projectile Compresses a Spring Gun
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Mechanics Lab | A Simple Pendulum & a Small Magnet Underneath
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Laser beams interacting with a screen | AM and momentum conservation
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Comparing Energy Transfer and Speed Changes in Isolated Systems
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Moment of inertia, conservation of angular momentum and energy
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Rate of fall depends on rotation?
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Vapor Pressure of Water Below Freezing: How Does It Affect Grain Storage?
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Circuit Analysis of a diagram with series and parallel circuits
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Force due to Surface tension here
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Energy of particle when under a central force
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Deriving the first-order system for this governing equation
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Explaining Earth's Lower Gravity at the Equator
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What is the efficiency of the circuit?
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Is work a vector quantity in physics?
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Volume average of mass function
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Bow & arrow -- Forces on the Bow
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Deriving Momentum From Newton's Second Law of Motion
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Projectile Motion with Air Drag
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Entropy change when melting ice then refreezing the water
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Deciphering this problem statement: Air resistance on projectiles
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Work or Net Work when calculating Power?
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Meteorology Physics: Apparent wind problem
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Object thrown at an angle: Initial velocity has to equal speed at t
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To find the amplitude of a mass on an elastic string
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How to Solve Hinge Force Problems?
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Solving 2 Blocks on a Spring: Ma = Kx
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Maximum compression of a spring?
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A cart with two cylindrical wheels connected by a rod
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Motion of 2 masses connected by a rod to a pendulum
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Special relativity problems — More details below
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Putting a slab of some material just after the slits in Young's model
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Physics Project Ideas for this Competition please (self-propelled car)
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Determining the factors impacting the amount of Work done
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What Forces Act on a Block in a Rotating Cylinder?
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Energy Conservation of a Vertical Spring
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Why Does My Calculation of Maxwellian Gas Velocity Yield an Incorrect Result?
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Finding the angle between a wall and a broken rope
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